Afghan officials say 14 people, including civilians, have been killed in a U.S. airstrike in eastern Afghanistan.

Abdul Ghani Musamem, a spokesman for the governor of Kunar province, says 14 people died in the airstrike in Narang district. Musamem says 13 others were wounded in the strike on Tuesday.

Aimal Faizi, a spokesman for President Hamid Karzai, said on Twitter on Wednesday that Karzai strongly condemned a U.S. airstrike in Kunar that killed and wounded civilians.

Maj. Paul Greenberg, a spokesman for the NATO-led coalition, said a precision strike killed one armed fighter in nearby Dangam district.

It is often difficult to confirm the toll from airstrikes and other attacks in rural Afghanistan. Allegations of civilian deaths are a frequent cause of friction between Karzai and NATO.